EP1210524B1 - Roulement a billes hybride a billes ceramique et bagues en acier - Google Patents

Roulement a billes hybride a billes ceramique et bagues en acier Download PDF

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Publication number
EP1210524B1
EP1210524B1 EP00962591A EP00962591A EP1210524B1 EP 1210524 B1 EP1210524 B1 EP 1210524B1 EP 00962591 A EP00962591 A EP 00962591A EP 00962591 A EP00962591 A EP 00962591A EP 1210524 B1 EP1210524 B1 EP 1210524B1
Authority
EP
European Patent Office
Prior art keywords
bearing
cage
balls
ball bearing
rings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00962591A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1210524A1 (fr
Inventor
Alain Jean Bidet
Jean-Pierre André CAHEZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF Aeroengine France SAS
Original Assignee
SNFA SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SNFA SA filed Critical SNFA SA
Publication of EP1210524A1 publication Critical patent/EP1210524A1/fr
Application granted granted Critical
Publication of EP1210524B1 publication Critical patent/EP1210524B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/32—Balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3862—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together
    • F16C33/3868—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together made from metal, e.g. two cast parts joined by rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6622—Details of supply and/or removal of the grease, e.g. purging grease
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/43—Aeroplanes; Helicopters

Definitions

  • the invention relates to a ball bearing, of the deep groove type, comprising an inner ring and an outer ring which are made of steel and each have one respectively of two facing grooves one from the other, sintered ceramic balls, arranged between and in contact with the grooves bearing rings, a ball cage arranged between the rings and retaining the balls, and two annular seals extending substantially radially between the two rings, on either side of the balls and of the cage, to retain a lubricant in the volume containing the balls and the cage and delimited between the two rings and the two seals.
  • the invention relates more particularly to a ball bearing such as presented above, of great precision, for example of level ABEC 7, and in particular of aeronautical quality.
  • the lifetimes between lubrication are therefore limited, on the one hand, by due to natural loss of lubricant due to overheating of the bearing during operation, and causing seepage of the lubricant overheated level of the annular seals.
  • the limitation of the duration of life results from the use of these known ball bearings in an environment hostile, in an outdoor environment or outside the protection of a housing, and due to maintenance involving the cleaning of surrounding parts of rolling, especially on rear helicopter transmissions, these cleaning operations as part of maintenance which may result loss of lubricant, causing rapid bearing oxidation.
  • the problem underlying the invention is to remedy these drawbacks, and to produce a ball bearing of the type presented above, allowing to extend the service lives between lubrication, as well as to improve sealing over time, and therefore reducing maintenance costs accordingly.
  • the ball bearing according to the invention of the type presented above, characterized, when the steel of the rings is not stainless, in that at least one of the rings, but preferably each of them is protected, especially against corrosion, by a surface coating of an alloy dense with high chromium content produced by electrolytic deposition.
  • the steel of the rings is stainless, and case hardening has been carried out on ring grooves to increase hardness, oxidability thus lost at the levels of the rolling grooves is compensated by a such chromium alloy surface coating by electroplating on the bearing grooves.
  • the ball bearing according to the invention is thus advantageously a bearing with deep groove type ball bearings, the behavior of which tribological effects is improved at the contact between the balls and the rings by the pair of materials coming into contact and used to make the rings and the balls, namely steel for the rings and a ceramic for the balls.
  • the ceramic of the beads is at least partly made up silicon nitride and / or titanium carbide.
  • the outer ring can be made in one steel less efficient than the steel of the inner ring, and, advantageously, the steels of the two rings are chosen from the following steels: traditional bearings, preferably of type M50 or 100C6, stainless steels, preferably 440C or XD15N type, structural nitriding steels or case hardening, preferably 32CDV13 or M50NIL.
  • the cage may be, as in the ball bearings of the state of the art, steel or a composite material, for example matrix in synthetic resin of the type known as “P.E.E.K” (polyether-ether-ketone) armed with short carbon fibers
  • the bearing cage of the invention is advantageously made of bronze, preferably of the US3ZFe type, providing better mechanical strength, especially in applications on rear helicopter drive shafts.
  • At least one seal advantageously comprises an annular metal flange, doubled laterally towards the inside of the bearing and extended radially towards the axis of the bearing by an annular seal in an elastically deformable material, the seal being retained by its outer radial periphery against a shoulder of the outer ring by a ring, mounted in the outer ring and pressing against the outer periphery of the metal flange, while the internal radial periphery of the seal comprises a section lip substantially V-shaped cross section of the annular material seal elastically deformable, said lip being in elastic contact against a external radial and cylindrical bearing surface of the inner ring.
  • the flange of at least one seal is pierced with at least one hole closed by a veil of the elastic material deformable of the corresponding annular seal, and at least one slot, not necessarily emerging, is formed in said veil from inside the hole, to facilitate the injection of lubricant into the bearing using a syringe whose needle is engaged in said slot.
  • equidistant holes in circumferential direction are provided in the flange, which is made of steel, of the seal, a radial slot being formed in the annular seal, which is made of fluorocarbon, in each of said axial holes of the flange.
  • a seal as defined above constitutes in itself an independent invention and represents a solution to the problem posed which can be used on a ball bearing regardless of the type and the structure of the balls, the rings and the ball cage, as they were previously defined.
  • the invention also relates to the application of a hybrid ball bearing according to the invention and as defined above, on a rear transmission for helicopters, and in particular on a rear gearbox, such that used for the rotational training of a helicopter rear rotor.
  • the ball bearing of FIGS. 1 to 7 essentially comprises a outer ring 1, an inner ring 2, balls 3, arranged between the rings 1 and 2 which are coaxial around the axis X-X of the bearing, a cage 4 annular, also arranged between the rings 1 and 2, and ensuring the retention lateral and in circumferential direction of the balls 3, and two seals 5 annulars, which each extend substantially radially between the two rings 1 and 2, on one side and on the other respectively of the cage 4 and the balls 3, and which retain a lubricant (grease or oil) in the volume delimited between the two rings 1 and 2 and between the two seals 5, around the cage 4 and balls 3 and between these elements, contained in this volume.
  • a lubricant greyse or oil
  • This ball bearing is of the deep groove type, i.e. the outer ring 1 and inner ring 2 respectively have a internal rolling groove 6 and an external rolling groove 7 which are in look at each other, concavity turned towards each other, and symmetrical relative to the median radial plane P-P of the bearing, plane relative to which all the elements of the ball bearing are symmetrical in this example.
  • the balls 3 are arranged between the rolling grooves 6 and 7 and in radial and rolling contact with these grooves 6 and 7, in a bearing designed to mainly withstand radial forces and little axial load.
  • the balls 3 are sintered in ceramic, for example in Si3N4 or TiC.
  • the two rings 1 and 2 are made of steel, for example a bearing steel traditional type M50 or 100C6, or even stainless steel type 440C or XD15N, or a structural nitriding steel, such as 32CDV13, or a structural carburizing steel such as M50NIL.
  • each ring 1 or 2 is protected by an alloy surface coating dense, non-magnetic, extremely hard, high in chromium, under form of electro-chemical deposition, and more precisely obtained by electrolytic deposition.
  • This deposition is preferably carried out using the process known under the brand name "Electrolizing", implemented in France by the company Delage Electrolizing S.A.
  • Such an electrolytic deposit of chromic alloy which is smooth, regular and uniform surface, without porosity or nodule, provides protection against corrosion, increased wear resistance and reduction of friction, in particular.
  • Such a dense coating of chromium-based alloy can also be deposited electrolytically on the case-hardened grooves of bearing rings in stainless steel, to compensate, at these bearing grooves, loss of oxidizability resulting from case hardening.
  • the cage 4 is made in two parts or half-cages 8 and 9, which are machined in bronze, for example of the US3ZFe type, and assembled by rivets axial 10, in this example nine solid rivets in Z10 to Z15 CNT18EA.
  • the two half-cages 8 and 9 are symmetrical with respect to the median radial plane P-P of the bearing, which is the radial support plane of the two half-cages 8 and 9, one against the other (see Figures 4 and 6).
  • Each half-cage 8 or 9 has the shape of a crown having generally semi-cylindrical recesses, which are complementary to the recesses of the same shape of the other half-cage 9 or 8, to form substantially cylindrical housings 11 with radial axes and regularly distributed in circumferential direction on the cage 4, so that each of the nine housings 11 in this example houses one of the nine balls 3.
  • Each seal 5 comprises an annular seal 14, extending substantially radially, in an elastically deformable material, in this example of fluorocarbon, which is molded on a metal frame made up of an annular flange 15.
  • the flange annular 15 has an external peripheral part 15a which is radial and extended towards the X-X axis of the bearing by a frustoconical part 15b converging laterally to the outside of the bearing, which itself extends towards the X-X axis by a radial part 15c ending in a peripheral part internal 15d substantially frustoconical converging laterally inwards of the bearing.
  • four cylindrical holes 16 of circular section, equidistant in circumferential direction around the axis X-X are arranged axially in the radial central part 15c of the steel flange 15 (see FIG. 1).
  • the fluorocarbon ring 14 is molded on the flange of reinforcement 15 so as to double the flange 15 in all its parts towards the inside of the bearing, by a thin film of fluorocarbon, which also covers the external radial edge of the external peripheral part 15a. Fluorocarbon of the annular seal 14 also covers the wall of each hole 16 and closes the bottom, towards the inside of the bearing, by a veil 14b.
  • the peripheral part internal 15d of the flange 15 is on the other hand drowned in a mass of fluorocarbon which constitutes the internal radial periphery of the annular seal 14 and of the seal 5, and which is shaped as a lip 14c of cross section substantially V-shaped open laterally to the outside of the rolling.
  • This V-shaped lip 14c comes into elastic contact against a bearing surface 17 lateral and cylindrical side of the inner ring 2 (see Figure 3) when the seal 5 is retained by the external radial peripheral part 15a of the flange 15 and by the film 14a of the annular seal 14 of fluorocarbon which doubles it laterally inward, against a radial and lateral shoulder 18 of the outer ring 1, by a metal ring 19, for example in Z 10 CN 18-8, which rod 19 is mounted and retained in a groove 20 opening radially inward and formed in the inner radial periphery of the lateral end corresponding to the inner ring 1 (laterally outside of shoulder 18).
  • the two seals 5 are mounted symmetrically one of the other with respect to the radial plane P-P, being fixed in a sealed manner by their outer radial periphery against the shoulders 18 of the outer ring 1, using the rods 19, and in tight contact by their V-shaped lip 14c against the cylindrical surfaces 17 of the inner ring 2, on either side of cylindrical bearings 21, between which is formed the groove 7, and on which the cage is centered 4.
  • An excellent seal is thus ensured against loss of lubricant by seepage.
  • a slot 22 is made in the web 14b fluorocarbon ring 14 which seals each hole 16 in the flange 15, and this from inside the hole 16.
  • This slot 22 is preferably oriented radially and is not necessarily through the veil 14b.
  • a syringe containing lubricant it is possible to engage the syringe needle between the edges of the slot 22, possibly puncturing the bottom of this slit and cross the veil 14b with the needle, to inject using the lubricant syringe in the bearing, then withdraw the needle from the web 14b and slot 22, which resiliently closes so as to prevent any leakage of lubricant to the outside of the bearing, through slot 22 and the hole 16
  • a ball bearing according to the invention advantageously lends itself to a use on a rear helicopter transmission, and in particular on a rear gearbox, for driving the rear rotor of a helicopter.
  • a ball bearing makes it possible to obtain 1200 hours of operation following an operational cycle of the helicopter and without regreasing.
  • the life between lubrication is therefore multiplied by one factor of the order of 3, compared to traditional bearings, and further relubrication is facilitated by the slots 22 in the fluorocarbon sails 14b which close off holes 16 of armature flanges 15 of seals sealing 5.
  • the cage 4 preferably bronze in this bearing, can also be made of steel or composite, for example fiber short carbon embedded in a synthetic resin type P.E.E.K. (Polyether ether ketone), as known in the state of the art.
  • P.E.E.K. Polyether ether ketone
  • a seal such as 5 can equip a bearing with balls of which the balls and / or the rings and / or the cage can be of a structure and / or of a different nature (s) from that (s) described above, and that this joint constitutes in itself an independent invention applicable to bearings with state of the art balls.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)
EP00962591A 1999-09-10 2000-09-08 Roulement a billes hybride a billes ceramique et bagues en acier Expired - Lifetime EP1210524B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9911360 1999-09-10
FR9911360A FR2798432B1 (fr) 1999-09-10 1999-09-10 Roulement a billes hybride a billes ceramique et bagues en acier
PCT/FR2000/002490 WO2001020181A1 (fr) 1999-09-10 2000-09-08 Roulement a billes hybride a billes ceramique et bagues en acier

Publications (2)

Publication Number Publication Date
EP1210524A1 EP1210524A1 (fr) 2002-06-05
EP1210524B1 true EP1210524B1 (fr) 2004-01-14

Family

ID=9549734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00962591A Expired - Lifetime EP1210524B1 (fr) 1999-09-10 2000-09-08 Roulement a billes hybride a billes ceramique et bagues en acier

Country Status (12)

Country Link
EP (1) EP1210524B1 (ja)
JP (1) JP2003509635A (ja)
KR (1) KR20020038752A (ja)
CN (1) CN1373836A (ja)
AT (1) ATE257918T1 (ja)
AU (1) AU7426100A (ja)
CA (1) CA2383060A1 (ja)
DE (1) DE60007757D1 (ja)
FR (1) FR2798432B1 (ja)
PL (1) PL354751A1 (ja)
TW (1) TW495590B (ja)
WO (1) WO2001020181A1 (ja)

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CN116928131A (zh) * 2023-06-14 2023-10-24 浙江颐顿机电有限公司 一种耐腐蚀自润滑水泵轴承

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CN100359191C (zh) * 2003-03-04 2008-01-02 丁树华 一种非金属轻载滚动轴承
CN100416121C (zh) * 2003-05-21 2008-09-03 上海市轴承技术研究所 自润滑角接触球轴承
CN100365295C (zh) * 2004-07-08 2008-01-30 沈阳建筑大学 高精度热压氮化硅陶瓷球轴承及其制造方法
JP2007078113A (ja) * 2005-09-15 2007-03-29 Ntn Corp ころ軸受、玉軸受、および軸受構造
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TWI454568B (zh) * 2007-02-26 2014-10-01 Ntn Toyo Bearing Co Ltd High-speed bearings with lubricating oil and high-speed rolling bearings
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CN102384158A (zh) * 2010-08-31 2012-03-21 拓肯兴业股份有限公司 轴承
WO2012047688A1 (en) * 2010-10-07 2012-04-12 Carrier Corporation Clutch bearing, electromagnetic clutch and transport refrigeration unit
CN102615230B (zh) * 2012-02-28 2014-06-25 洛阳轴研科技股份有限公司 分离型保持架进行整体铆合的加工方法
CN102758840A (zh) * 2012-07-31 2012-10-31 无锡市第二轴承有限公司 化纤卷绕机专用轴承
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CN103104607A (zh) * 2012-12-28 2013-05-15 瓦房店轴承集团有限责任公司 钢球引导实体保持架结构的深沟球轴承
US10408268B2 (en) 2013-01-25 2019-09-10 Trane International Inc. Method of using pressure nitrided stainless steel hybrid bearing with a refrigerant lubricated compressor
WO2015073297A1 (en) * 2013-11-15 2015-05-21 Schaeffler Technologies Gmbh & Co. Kg. Phenolic bearing cage with self-lubricating coating and method of manufacturing phenolic bearing cage with self-lubricating coating
CN104196877A (zh) * 2014-07-28 2014-12-10 洛阳维斯格轴承有限公司 一种等截面超薄壁轴承密封结构
CN105422629A (zh) * 2015-12-28 2016-03-23 常熟市常轴轴承有限公司 一种长寿命化纤轴承
JP6789739B2 (ja) * 2016-09-08 2020-11-25 Ntn株式会社 シール付軸受
JP2017129276A (ja) * 2017-03-08 2017-07-27 Ntn株式会社 深みぞ玉軸受の保持器
CN108518418A (zh) * 2018-04-25 2018-09-11 中国航发哈尔滨轴承有限公司 一种增强型非金属保持架

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Publication number Priority date Publication date Assignee Title
CN116928131A (zh) * 2023-06-14 2023-10-24 浙江颐顿机电有限公司 一种耐腐蚀自润滑水泵轴承
CN116928131B (zh) * 2023-06-14 2024-06-07 浙江颐顿机电有限公司 一种耐腐蚀自润滑水泵轴承

Also Published As

Publication number Publication date
FR2798432B1 (fr) 2001-11-09
JP2003509635A (ja) 2003-03-11
DE60007757D1 (de) 2004-02-19
FR2798432A1 (fr) 2001-03-16
CA2383060A1 (fr) 2001-03-22
CN1373836A (zh) 2002-10-09
KR20020038752A (ko) 2002-05-23
WO2001020181A1 (fr) 2001-03-22
EP1210524A1 (fr) 2002-06-05
AU7426100A (en) 2001-04-17
TW495590B (en) 2002-07-21
ATE257918T1 (de) 2004-01-15
PL354751A1 (en) 2004-02-23

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